#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>


int main()
{
    int count = 10;
    while (count--)
    {
        if (count == 5)
        {
            raise(SIGKILL);
        }
        printf("hello world\n");
        sleep(1);
    }
    return 0;
}